BMW TPT 0W30 to Motul X-cess gen2 5W40

2020M2Competition · 07-22-2021, 10:49 PM

After running the old BMW (Shell) Twin Power Turbo 0W30 LL-01FE for 10,000 miles, I decided to give Motul 8100 X-cess gen2 5W40 LL-01 a try

With the BMW TPT 0W30 my operating temperatures were remarkably (almost unbelievably) consistent

In Efficient and Sport modes, temperatures would climb to 223F according to my oil temperature display and never rise above that regardless of conditions from city traffic to laps around Sebring

In Sport+ mode, temperature would drop to exactly 205F in stop and go city traffic and stay there every time

Yes, I did take my car to the track with the BMW 0W30

I did, however, change the oil after every track day

5 oil changes in total over 10,000 miles

Anyhow, I only have 50 miles on the Motul so far with just a mix of city and highway driving, but here are my first impressions / questions

The engine seems to run a little smoother and quieter at full operating temperature with the Motul (although this could just be placebo effect)

In Efficient and Sport modes in stop and go city traffic, the engine oil temperature was mostly 223F (as before) but it briefly ran a tiny bit higher at 227.5F two or three times

Obviously, not a huge difference being only 4.5F higher

Nevertheless, since that is the highest temperature I've ever seen on my display I couldn't help but take notice

So a few questions to those out there

Any thoughts on why the 5W40 ran a bit hotter than the 0W30?

Perhaps the different base stocks with the Motul being Group III HC versus the BMW/Shell Group III GTL?

Speaking of different base stocks, do I need to be concerned about the Motul oil mixing properly with whatever BMW/Shell oil was leftover after the oil change?

Should I consider doing another oil change with the Motul to try to flush out any of the remaining BMW/Shell oil?

chris719 · 07-23-2021, 02:18 AM

Thicker oil runs hotter, generally speaking.

2020M2Competition · 07-23-2021, 09:29 AM

Quote:

Originally Posted by chris719

Thicker oil runs hotter, generally speaking.

I guess that makes sense

Presumably, in general, there is more drag and/or friction

Also, in general, a thicker oil should be able to absorb more heat than a thinner oil while a thinner oil should be able to transfer heat faster

Enabled · 07-26-2021, 12:53 PM

Thank you for your observations.

I just put this oil into my M2C 2 days ago and it seems good. The slightly thicker oil is just better protection for hot climates and harder driving.

07-22-2021, 10:49 PM	#1
2020M2Competition Lieutenant 431 Rep 433 Posts Drives: Yes Join Date: Oct 2016 Location: Florida iTrader: (1)	BMW TPT 0W30 to Motul X-cess gen2 5W40 After running the old BMW (Shell) Twin Power Turbo 0W30 LL-01FE for 10,000 miles, I decided to give Motul 8100 X-cess gen2 5W40 LL-01 a try With the BMW TPT 0W30 my operating temperatures were remarkably (almost unbelievably) consistent In Efficient and Sport modes, temperatures would climb to 223F according to my oil temperature display and never rise above that regardless of conditions from city traffic to laps around Sebring In Sport+ mode, temperature would drop to exactly 205F in stop and go city traffic and stay there every time Yes, I did take my car to the track with the BMW 0W30 I did, however, change the oil after every track day 5 oil changes in total over 10,000 miles Anyhow, I only have 50 miles on the Motul so far with just a mix of city and highway driving, but here are my first impressions / questions The engine seems to run a little smoother and quieter at full operating temperature with the Motul (although this could just be placebo effect) In Efficient and Sport modes in stop and go city traffic, the engine oil temperature was mostly 223F (as before) but it briefly ran a tiny bit higher at 227.5F two or three times Obviously, not a huge difference being only 4.5F higher Nevertheless, since that is the highest temperature I've ever seen on my display I couldn't help but take notice So a few questions to those out there Any thoughts on why the 5W40 ran a bit hotter than the 0W30? Perhaps the different base stocks with the Motul being Group III HC versus the BMW/Shell Group III GTL? Speaking of different base stocks, do I need to be concerned about the Motul oil mixing properly with whatever BMW/Shell oil was leftover after the oil change? Should I consider doing another oil change with the Motul to try to flush out any of the remaining BMW/Shell oil?
	Appreciate 1 Enabled1417.50 Tweet Quote

07-23-2021, 02:18 AM	#2
chris719 Major General 7365 Rep 7,321 Posts Drives: '08 M Roadster Join Date: Oct 2007 Location: NJ iTrader: (0)	Thicker oil runs hotter, generally speaking.
	Appreciate 1 2020M2Competition430.50 Quote

07-26-2021, 12:53 PM	#4
Enabled Lieutenant Colonel 1418 Rep 1,816 Posts Drives: 328xd Wagon, M2 Competition Join Date: Jun 2018 Location: Houston iTrader: (0)	Thank you for your observations. I just put this oil into my M2C 2 days ago and it seems good. The slightly thicker oil is just better protection for hot climates and harder driving. __________________ -2014 328d Wagon, 8HP. Self-tuned, 270hp/430ft-lbs. -2019 M2 Competition MT, Alpine White. Self-tuned 560hp -2016 Mini Cooper S, MT. Many plans. Others: -E36 328is. 2000 Z3 Roady. 2003 VW Jetta TDI Manual. Estoril Z3M Coupe.
	Appreciate 0 Quote